Phonograph



W. S. KUCKI.

PHONOGRAPH.

APPLICATION FILED NOV.'I4, 191s.

Patented Sept. 7, 1920.

WINOENT S. KUCKI, OF CHICAGO, ILLINOIS.

rHonoGRAPH.

my invention the brake member is given the initial portion of its braking movement, by any suitable means, to bring thls brake member into engagement with the rotating turn table, the turn table being thereupon effective to complete the braking movement of the brake member to check the rotation of the turn table. By means ofthis arrangement the brake member is forcefully applied to the turn table by the rotation of the turn table, that is the brake member is forcefully applied to the turn table by the turn table rotating motor that operates the brake member through the intermediation of the turn table. This arrangement permits the elimination of the brake applying spring mechanism that has hitherto been employed to snap the brake member into engagement with the turn table.

In accordance with another of-the fea tures of the invention the same brake mem ber, whether-constructed as above specified or otherwise, is adapted to be pperatedmanually or automatically. 7

In accordance with the third feature of my invention automatically operated brake member operating. mechanism is employed that may be operated by the tone arm structure of the phonograph at the conclusion of the record reproducing movement of the tone arm and in a manner whichwill not; .materially oppose the completion of the movement of the tone arm toward the center of the disk played. In carrying out this feature of my invention a motor transmitting member is employed which is preferably in the form of a bar that is slidable or otherwise movable longitudinally of itself and has one end in actuating relation to the brake member and its other end operable upon by the tone arm structure that slides the bar longitudinally of itself, so that brake Specification of Letters Patent.

Application filed November 14, 1918. Serial No. 262,4g5.

actuating movement of the tone arm may. be directly transmitted through the sliding bar without being partially lost by any lateral deflection of the bar, the latter being an objectionable characteristic of existing automatically operated phonograph brakes.

I will explain my invention more fully by reference to the accompanying drawing showing the preferred embodiment thereof and in which Figure l is a plan view of phonograph structure, .with :parts broken away, equipped in accordance with my .111-

vention, this figure showing the brake member in full lines unapplied and 1n dotted lines having initial engagement with the turn table; Fig.- 2 is a View of part of the structure illustrated in 1 showing the brake member fully applied to the turn table; and Fig. 3 is a sectional view on line 33 of F 1. I

Like parts are indicated by similar characters of reference throughout the different figures.

The phonograph shown includes a circuupon a shaft 2 which may be rotated by gearing 3 driven by any suitableform of spring or other motor, not shown.- Any suitable form of tone arm structure may be employed, the tone arm structure illustrated including the hollow arm 4: swingingly mounted at its outer end as indicated at Patented Sept. 7,1920.

' lar, record supporting, turn table 1 mounted,

and carrying a sound box 6 at its inner end.

This sound box is provided with the usual needle holder 7 that holds the needle orstylus 8 that is received in the spiral grooves of the sound reproducing record 9. This spiral groove usually has" a' number of spiral turns '10 at its inner end which have no sound producing record formations thereon and whichI'employ to effect the automatic application of the brake member as will hereinaf'ter'appear.

The brake member desirably includes a swinging metallic portion 11 which is oted at 12 to a mounting plate 13 that is secured to the cabinet of the phonograph.

iThisplate 11 has a handle portion It by which the plate may be turned by hand in order that the brake may be manually applied. which a brake pad 16 is disposed. This brake pad has a face which is initially engageable with the periphery of the turn table upon one side of the line joining the centers of movement (12 and 2) of the brake piv- The plate 11 supports a socket 15 in I started 7 been started automatically as will herelngages the brake member with increasing pressure to continue and complete the braking movement of the brake member that was by the handle 14- or winch may have after appear. A'stop 17 limits the braking movement of the brake member by engaging the handle or other portion 1-1 preforably when the brake pad 16 is substantially aline d'with the ce'ntersof movement (2 and 12) of the turn table and the brake member. When it is desired to release the turn table the swinging plate 11 is merely reversed in its movement to withdraw the brake pad 16 from engagement with the turn table. 7

In the absence of the automatic mechanism which ,will hereinafter be described and which I preferably employ, the withdrawing movement of the brake pad 16 from the turn table is limited by the en gagement of the partof the plate 11 that immediately supports the brake pad with the stop 17. V

In order to provide means for automatically stopping the rotation of the turn table at the conclusion of a record, I desirably automatically operate the hand operable brake whereby but one brake member 7 per phonograph need be employed. \Vhere the hand operable brake member is of the construction shown the mounting plate 13 may be equipped with a post 18 over which may be slipped the upright sleeve 19 that supports a horizontal arm 20. The level of this arm with respect to the levelof the turn table is adjustably determined by means of an upright screw 21 in threaded engagement with the arm 20 and sleeve 19. This screw projects through the upperend of the sleeve 19 to an adj ustable eXtent and has its lower end in engagement with the post 18 thereby to regulate the height of the'. arm 20. The supporting arm 20 carries a motion transmitting'memher that is in moving or actuating relation to the brake member for establishing initial engagement between the brake member and the turn table, the turn table preferably completing the braking movement by the employment of the preferred construction of brake member shown and above described. This motion transmitting member is preferably in the nature of a bar which is made adjustable in length by being formed in two slidably connected sections 22, 23. The lower section 22 is provided with a longitudinal slot 24: at its outer end. The stem of a screw 25 passes through this slot into the arm 20 with which it has threaded connection but the screw is shouldered so that itcannot bind the bar portion 22 but willpermit this bar portion to move at its slot 24: along its support 20.

The innerendof the support 20 is provided with a longitudinal slot 26. The stem of a screw 27 passes through this slot into the inner end of the bar portion 22 with which the screw has threaded connection but this screw is alsoshouldered so that it cannot bind the bar portion 22 but will permit this bar portion to 'move at the slot'26 along its support 20. This isthe preferred means for enabling the bar structure 22, 23 to slide longitudinally of itself. The bar portion 23 has a longitudinal slot 28. The stem into the bar portion 22 with which it has threaded connection but the screw is shouldered so that it cannot bind the bar por tion 23 but will permit this bar portion to be adjusted with. respect to its companion 22 to determine the effective length of the bar 22, 23. There is another screw 30 that also passes through the slot 28 into the bar portion 22. A washer 31 surrounds the shank of the screw 30 and overlies the slot 28 to engage the portions of the bar member 23 that margin this slot. A spring 32 is interposed between the head of the screw 30 and the washer 31'. This spring,

of a screw 29 passes through this slot the bar portion 23 inwardly or outwardly.

The inner end of the bar portion 23 is angularly deflectedand is covered by a rubber sleeve '34 which is engageable by the V needle holder or support? of the tone arm structure when the needle is operating in some of the unmarked or'non-record per tions10 of the record groove. The outer end of the bar nortion 22 is downwardly deflected as indicated at 35 to be engageable with the adjustable screw abutment 36 that is carried in the upright post 37 projecting upwardly from the plate 11 of the brake member, this screw and the brake pad 16 being upon opposite sides of the pivot 12. The portion of the bar carrying the rubber sleeve 34 may be readily ad'- justed in relation to the non-record bearing turns 10 of the record groove so that the needle socket 7 may engage the bar at the conclusion of the record reproducing movement of the tone arm structure. The extent to which the brake pad 16 may be withdrawn from the turn table is now determined by the position of the abutment screw 36 in relation to the extension 35 of the barrportion 22. Byadjusting the position of this screw the number of-turns of the turn table required to enable the bar to turn the brake member into initial engagement with the turn table may readily be determined, this movement of the brake member or the portion 16 thereof into engagement with the periphery of the turn table being accomplished with light effort on the part of the tone arm since it is only necessary to bring the brake pad into initial engagement with the turn table which thereafter forcefully completes the braking movement of the brake member in the manner hitherto set forth. As a consequence of the application of the brake member to the turn table the bar 22, 28 is given additional outward movement to effect the rapid separation of the Bar from engagement with the tone arm so that the influence of the tone arm upon the bar is removed. This result is desirably accomplished by means of a post 38 upon the brake member. YVhen the braking movement of the brake member is completed by the turn table this post 38 will engage the branch of the bar 22-23 to slide the bar outwardly upon its support 20 thereby withdrawing the sleeve 34 upon the bar sufliciently away from the needle socket 7 to separate the tone arm from the bar when the turn table completes the application of the brake to itself.

WVhile I have herein shown and particubuthaving thus described my invention I claim as new and desire to secure by Let ters Patent the following A phonograph having a circular, record supporting turn table; a swinging brake member having a face initially engageable with the periphery of the turn table upon one side of the line joining the centers of movement of the brake member and the turn table whereby the turn table completes the braking movement of said brake member; a tone arm structure; a bar mounted upon one side of the turn table and overlymg the turn table and of adjustable length to define the'location of the inner end of the bar which is engageable by the sound box end of the tone arm structure, said bar being mounted to be moved longitudinally of itself by the sound box end of the tone arm structure at the conclusion of the record reproducing movement of the tone arm structure; and an abutment moving with the brake member and engageable by an outer end portion of said bar.

In witness whereof, I hereunto subscribe my name this 4th da of Nov. A. D., 1918.

WI CENT S. KUCKI. 

